messet



Jan. 9, 1923.

1,441,735. A. MESSER. I

ELECTRIC SWITCHING DEVICE. FILED IULYI, I92].

, W 41, @gauir 2 SREETS-SHEET i- Jan. 9, 1923. 1,441,735.

A. MESSER. ELECTRIC SW| TCHI NG DEVICE.

FILED Jun I, 1921. 2 SHEETS-SHEET 2.

5 14M. /%/MWM F Milo/v2 eg.

Patented Jun. 9, 1923.

PATENT OFFICE.

ADOLF MESSE-R, OF ERFURT, GERMANY. ASSIGNOR OF ONE-HALF TO KABBUBG BROTHERS, INC, OF NEW YORK. N. Y.. A CORPORATION OF NEW YORK.

ELECTRIC SWITCHING DEVICE.

Application filed July i, 1921. seriai Ho. 452.001.

To all who! it may conrcru:

lie it known that l. .\l)(Il.1- .vlsssizii, citizen of Germany. residing at Biselilelien. near l'ii'fui't. Germany. have invented certain new and useful lilccti'ic Switching l')evices (for which 1 have tiled applications in Belgium, Jan. 7. 15 21: Spain. Jan. 14. 15121; Germany. Jan. 23, 1920, Patent No. 327.872; England, .lan. HI, 1921: weden. Jan. 21. 1921: Italy, Mar. 10. 1921; Australia, Mar. 27. 1921.; Norway, Jan. 6. 1921: France. Jan. 1!). 1921 Holland. .lan.1,1921:(anadii. Mar. 11. 1921; Japan. Mar. 29. 1921; South Africa. Feb. 24, 1921; Romania, Mar. 14. 1921; Denmark, Dec. 29, 1920: Austria. Jan. 3. 1921; Switzerland. Dec. 311, 1921; Slovakia. Jan. 18, 1921; and Hungary. Jan. 4. 1921). of which the following is a specification.

My invention relates to electric switches which are used for closing or opening individual circuits. for selecting one or the other. or several at a time. of a group of circuits and for other similar purposes for which electric switches are used. The improvement secured by my invention. consists moi-c specifically in providing easy means h which the internal connections of" the switch and thereby the specific purpose of the switch may he changed without ch.'iu,i, in,- the construction of the switch.

In the following a description is given of fille lllfltllflil of applying my invention tn 1).

stricted to the particular type of switch shown nor to the specific means used for changin; the internal connections.

in order that the invention may he clearly understood. 1 am ilcsci'iliiug the sonic,

ltll rcici'cuce to the particular construction shown in the accompanyiu;, drawings uhei'eiu Figures 1 and 2 show the outside of the switch in front elevation and side elevation respectively.

Figure .i shows on zi-largcr scale the s itcli in elevation. tliiinHl liciu; I'tllltH'tll.

Figure l is a scction on line of l ljjlfl't: 3.

Figure Ti is a plan view of the switch disc 2 sci-n from helow.

llf1lll( to 12 how some of tlic connec tions whi h an he. readily c tahlislicil l v means of ihe particular witch here described, while, 0? course. the number of variations is not limited to those shown.

Referring now to Figures 1 to 5, the switch consists mainly of the insulating base (2). th switch disc (3), the stem (7),

the key (4). and the cover (5). The base (2)- has a recess (6) in which the switch disc (3) is located. The stem (7)-carries the key (4), and in addition is provided with extensions (8) which cnga e the switch disc (3). so that the latter will turn with the stem (7).

The switch disc (3), is made of insulating material and fitted with four contact sleeves (10), also with a metal plate (29) covering the lower surface, of the switch disc This metal plate (29) is divided into separateparts. in this particular instance into three parts, (14), (16), and (17), clearly shown in Figure 5. which also shows insulilting ribs. (11). (12), and (13), projecting from the lower surface of the switch disc (21-). Screws (1S) and (19) are provided, which can lic'inserted into the insulatilk rilis (12) and (13) in such a manner. that the licads of these screws establish metallic connectionbetween the several parts (14), (1(1). and (17). of the metal plate (29). 'liilc screws are here shown for the purpose of estahlishing connections between ilificrent parts of the metal plate (29), other means like removable clamps. removable wire connections. etc. can he used.

The contact sleeves (10) are funnelshaped at their upper ends. so as to engage steel halls (20) which are arranged to slide on the -switch disc (3) when the Sllnle is turned and which are pressed against the switch disc (3) hy hlade sprinizs (21). Guiding pieces (22) serve to hold the balls (20) in place and are held, together with blade springs (21), terminal supports (23). and terminals (24) to the base (2) by screws (25) and (26). Vhile in this instance four terminals are shown, my invention is not limited to any warticular nuiuher of termimils. contact halls. plate springs, etc.

S rews (IR) and (19) can he ins rted or removed through the opening (27) provided in base (2). Screw (28) is shown to close this opening! (27) after the desired change in internal connection has liccn made. In regular use the switch disc (3) turned by means of the ke (4) whereupon the balls (20) rise out of t e contact sleeves (10) and roll on switch disc (3) until each one engages the next following contact sleeve thus establishing contact again.

Referring now to Figures 6 to 12, Figure 6 shows a bottom view of metal plate (29 with one screw inserted'between the hal sector of the plate and one of the quartersectors, with switch connections for-o n-,

ing or closing one individual circuit. his connection is used when it is intended to use the switch for opening or closing one particular circuit.

Figure 7 shows metal plate (29) with one screw inserted betweeru the two quarter sectors, two switches being used in conjunction so that one individual circuit may be opened or closed from two different points independently.

Figure 8 shows a similar interconnection of the sectors of the metalplate (29), but a system of connections embodyin three switches for o ening and closing an Individual circuit int ependently from three points such :15 is sometimes used in lighting' stair-' cases.

Figures 9, l0, and ll show metal )late (29) with screw inserted between the alfsector and one of the quarter-sectors and with connections to two independent circuits. the arrangement being such that either one of the two circuits may be closed indepen dently or that both circuits may be opened, or that both circuits may be closed.

Figure 12 shows metal plate again with connection established between the half-sector and one of the'quarter-sectors, but with connections in such a manner that out of three independent circuits any two may be closed at a time, while the third one is o n or all three circuits may be opened in he same time.

I claini 1. In an electric switch the combination of an insulating base stationary terminals, a movable insulating switch disc, contacts fastened. to said insulating switch disc, cxtensions of said terminals establishing vary ing electrical connections with said contacts; and means for changing the electrical interconnection of said contacts without removing said insulating switch disc from said insulating base.

2. In an electric switch the combination of an insulating base, a cover, stationary tcr minals, a movable insulating-switch disc, contacts fastened to said insulating switch disc, extensions of said terminals establishing varying electrical connections with said contacts, and means for changing the electrical interconnection of said contacts without removin said cover.

3. In an eectric switch the combination of an insulating base, stationary terminals, a movable insulating-switch disc. contacts fastened to said insulating switch disc removable connections between sa'. contacts. extensions of said terminals establishing varying electrical connections with said contacts and means for changing said removable connections without removing said insulating switch disc from said insulating base.

4. In an electric switch the combination of an insulating base, a cover, stationary terminals, a movable insulating switch disc, contacts fastened to said insulating switch disc, removable connections between said contacts, extensions of said terminals astablishin varying electrical connections with said contacts and means tor changing said removable connections without removing said cover so as to change the electrical interconnection of said contacts.

ADOLF MESSER. 

